Pipeline connecting device for petrochemical industry

The utility model relates to the technical field of pipeline connection, in particular to a petrochemical pipeline connecting device which comprises two pipeline bodies and a clamping device, fixing devices are arranged on the outer sides of the two pipeline bodies in a sleeved mode, and the upper sides and the lower sides of the opposite ends of the two fixing devices are connected through the clamping device. The clamping device comprises two first arc-shaped plates, the two first arc-shaped plates are located at the opposite ends of the two fixing devices correspondingly, the inner side walls of the two first arc-shaped plates make contact with the outer sides of the two pipeline bodies correspondingly, the top ends of the two first arc-shaped plates are fixedly connected with fixing plates correspondingly, and a sliding rod is arranged between the two fixing plates. And by rotating two nuts, two first arc-shaped plates move inwards to extrude the two fixing devices, so that the two pipelines are connected